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David Alan Gilbert" , Claudio Fontana , Julien Grall Subject: [RFC PATCH v5 09/52] hw/xen_backend: refactor xen_be_init() Date: Fri, 30 Dec 2022 12:11:52 +0000 Message-Id: <20221230121235.1282915-10-dwmw2@infradead.org> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20221230121235.1282915-1-dwmw2@infradead.org> References: <20221230121235.1282915-1-dwmw2@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Received-SPF: none client-ip=2001:8b0:10b:1236::1; envelope-from=BATV+1132f1bfe572585e6c7f+7068+infradead.org+dwmw2@casper.srs.infradead.org; helo=casper.infradead.org X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Joao Martins Signed-off-by: Joao Martins Signed-off-by: David Woodhouse Reviewed-by: Paul Durrant --- hw/xen/xen-legacy-backend.c | 40 +++++++++++++++++++++-------- include/hw/xen/xen-legacy-backend.h | 3 +++ 2 files changed, 32 insertions(+), 11 deletions(-) diff --git a/hw/xen/xen-legacy-backend.c b/hw/xen/xen-legacy-backend.c index 085fd31ef7..694e7bbc54 100644 --- a/hw/xen/xen-legacy-backend.c +++ b/hw/xen/xen-legacy-backend.c @@ -676,17 +676,40 @@ void xenstore_update_fe(char *watch, struct XenLegacyDevice *xendev) } /* -------------------------------------------------------------------- */ -int xen_be_init(void) +int xen_be_xenstore_open(void) { - xengnttab_handle *gnttabdev; - xenstore = xs_daemon_open(); if (!xenstore) { - xen_pv_printf(NULL, 0, "can't connect to xenstored\n"); return -1; } qemu_set_fd_handler(xs_fileno(xenstore), xenstore_update, NULL, NULL); + return 0; +} + +void xen_be_xenstore_close(void) +{ + qemu_set_fd_handler(xs_fileno(xenstore), NULL, NULL, NULL); + xs_daemon_close(xenstore); + xenstore = NULL; +} + +void xen_be_sysdev_init(void) +{ + xen_sysdev = qdev_new(TYPE_XENSYSDEV); + sysbus_realize_and_unref(SYS_BUS_DEVICE(xen_sysdev), &error_fatal); + xen_sysbus = qbus_new(TYPE_XENSYSBUS, xen_sysdev, "xen-sysbus"); + qbus_set_bus_hotplug_handler(xen_sysbus); +} + +int xen_be_init(void) +{ + xengnttab_handle *gnttabdev; + + if (xen_be_xenstore_open()) { + xen_pv_printf(NULL, 0, "can't connect to xenstored\n"); + return -1; + } if (xen_xc == NULL || xen_fmem == NULL) { /* Check if xen_init() have been called */ @@ -701,17 +724,12 @@ int xen_be_init(void) xengnttab_close(gnttabdev); } - xen_sysdev = qdev_new(TYPE_XENSYSDEV); - sysbus_realize_and_unref(SYS_BUS_DEVICE(xen_sysdev), &error_fatal); - xen_sysbus = qbus_new(TYPE_XENSYSBUS, xen_sysdev, "xen-sysbus"); - qbus_set_bus_hotplug_handler(xen_sysbus); + xen_be_sysdev_init(); return 0; err: - qemu_set_fd_handler(xs_fileno(xenstore), NULL, NULL, NULL); - xs_daemon_close(xenstore); - xenstore = NULL; + xen_be_xenstore_close(); return -1; } diff --git a/include/hw/xen/xen-legacy-backend.h b/include/hw/xen/xen-legacy-backend.h index be281e1f38..0aa171f6c2 100644 --- a/include/hw/xen/xen-legacy-backend.h +++ b/include/hw/xen/xen-legacy-backend.h @@ -42,6 +42,9 @@ int xenstore_read_fe_uint64(struct XenLegacyDevice *xendev, const char *node, void xen_be_check_state(struct XenLegacyDevice *xendev); /* xen backend driver bits */ +int xen_be_xenstore_open(void); +void xen_be_xenstore_close(void); +void xen_be_sysdev_init(void); int xen_be_init(void); void xen_be_register_common(void); int xen_be_register(const char *type, struct XenDevOps *ops); -- 2.35.3